[16.0][FIX] base: keep translations for null src while upgrade

openupgrade_scripts/scripts/base/16.0.1.3/end-migration.py

@@ -0,0 +1,44 @@
+# Copyright 2024 Tecnativa - David Vidal
+# License AGPL-3.0 or later (http://www.gnu.org/licenses/agpl.html).
+
+from openupgradelib import openupgrade, openupgrade_160
+
+from odoo.tools import column_exists
+
+
+def update_callable_translatable_fields(env):
+    """Use Odoo's core method to get complete translations of translated fields with
+    a callable method for translations (html_translate, xml_translate)"""
+    exclusions = [
+        # ir.actions.* inherits the name and help columns from ir.actions.actions
+        ("ir.actions.act_window", "name"),
+        ("ir.actions.act_window", "help"),
+        ("ir.actions.act_url", "name"),
+        ("ir.actions.act_url", "help"),
+        ("ir.actions.server", "name"),
+        ("ir.actions.server", "help"),
+        ("ir.actions.client", "name"),
+        ("ir.actions.client", "help"),
+        ("ir.actions.report", "name"),
+        ("ir.actions.report", "help"),
+    ]
+    fields = env["ir.model.fields"].search_read(
+        [("translate", "=", True)], ["model", "name"]
+    )
+    fields_spec = [
+        (f["model"], f["name"])
+        for f in fields
+        if (
+            (f["model"], f["name"]) not in exclusions
+            and f["model"] in env
+            and column_exists(env.cr, env[f["model"]]._table, f["name"])
+            and f["name"] in env[f["model"]]._fields
+            and callable(env[f["model"]]._fields[f["name"]].translate)
+        )
+    ]
+    openupgrade_160.migrate_translations_to_jsonb(env, fields_spec)
+
+
+@openupgrade.migrate()
+def migrate(env, version):
+    update_callable_translatable_fields(env)

openupgrade_scripts/scripts/base/16.0.1.3/pre-migration.py

@@ -86,6 +86,7 @@ def update_translatable_fields(cr):
             continue
         # borrowed from odoo/tools/translate.py#_get_translation_upgrade_queries
         translation_name = "%s,%s" % (model, field)
+        emtpy_src = """'{"en_US": ""}'::jsonb"""
         openupgrade.logged_query(
             cr,
             f"""
@@ -98,8 +99,10 @@ def update_translatable_fields(cr):
                 GROUP BY it.res_id
             )
             UPDATE {table} m
-            SET "{field}" = CASE WHEN t.noupdate IS FALSE THEN t.value || m."{field}"
-                                 ELSE m."{field}" || t.value END
+            SET "{field}" = CASE
+                WHEN m."{field}" IS NULL THEN {emtpy_src} || t.value
+                WHEN t.noupdate IS FALSE THEN t.value || m."{field}"
+                ELSE m."{field}" || t.value END
             FROM t
             WHERE t.res_id = m.id
             """,
@@ -108,11 +111,6 @@ def update_translatable_fields(cr):
                 "name": translation_name,
             },
         )
-        openupgrade.logged_query(
-            cr,
-            "DELETE FROM ir_translation WHERE type = 'model' AND name = %s",
-            [translation_name],
-        )
 
 
 @openupgrade.migrate(use_env=False)